Finding the Fourth Proportional to 22,081.05, 30,472.16 and 12,009.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,081.05 : 30,472.16 = 12,009.78 : x
2. Step 2: Convert to fraction form
   22,081.05/30,472.16 = 12,009.78/x
3. Step 3: Cross multiply
   22,081.05x = 30,472.16 × 12,009.78
4. Step 4: Simplify right side
   22,081.05x = 365,963,877.68
5. Step 5: Solve for x
   x = 365,963,877.68/22,081.05
6. Step 6: Final answer
   x = 16,573.66